[lkml]   [2007]   [Aug]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH 1/1] af_packet: don't enable timestamps in mmap'ed sockets
    On jue, 2007-08-09 at 18:33 +0400, Evgeniy Polyakov wrote:
    > On Thu, Aug 09, 2007 at 04:21:54PM +0200, Unai Uribarri ( wrote:
    > > The attached patch removes the automatic timestamp activation, that
    > > only mmap'ed AF_PACKET sockets perform. I known it can break user
    > > applications, but I believe that it's the correct solution.
    > How tcpdump with mmap libpcap will work with it?

    In Linux, you can enable timestamps on any socket executing:

    int val = 1;
    setsockopt(sock, SOL_SOCKET, SO_TIMESTAMP, &val, sizeof(val));

    PD: Current release of tcpdump doesn't mmap the reception ring and
    timestamps packets at user space with gettimeofday. It isn't the best
    performing alternative, but it's portable.

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2007-08-09 20:17    [W:0.040 / U:11.932 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site